Python Questions

Kajal Saini

Score: 🔥 44

Beginner

Took 2 months

Programming Language

Python

93%

Questions Attempted

14 / 15

Correct Answers

Incorrect Answers

Points Earned

🔥 14

Question 1

What will the following code snippet print?

x = 5
y = 2 * x
print(y)

5
2 * x
10
x * 2

Explanation:

The code assigns 5 to 'x', then calculates 'y' as 2 times 'x' (which is 10), and finally prints the value of 'y'.

Question 2

How many expressions can a lambda function have?

Only one
Two
As many as needed
None, it only takes arguments

Explanation:

Lambda functions are limited to a single expression, which is evaluated and returned. This enforces their design for short, self-contained operations.

Question 3

Can a Python function return multiple values?

No, a function can only return a single value.
Yes, by separating the values with commas, effectively returning a tuple.
Yes, by using multiple 'return' statements within the function.
Only if the values are of the same data type.

Explanation:

Python allows returning multiple values by implicitly packaging them into a tuple. This tuple can then be unpacked into individual variables.

Question 4

Which of the following data structures in Python is mutable?

List
Tuple
String
None of the above

Explanation:

Lists in Python are mutable, meaning their elements can be changed after creation. Tuples and strings are immutable.

Question 5

What is the output of the following Python code?

my_list = [1, 2, 3, 4, 5]
print(my_list[1:3])

[1, 2]
[2, 3]
[3, 4]
[1, 2, 3]

Explanation:

In Python slicing, the starting index is inclusive, and the ending index is exclusive. Therefore, my_list[1:3] will return a new list containing elements from index 1 (the second element) up to, but not including, index 3.

Question 6

What will the following code print?

set1 = {1, 2, 3}
set2 = {3, 4, 5}
print(set1.intersection(set2))

{1, 2, 3, 4, 5}
{3}
{1, 2, 4, 5}
Error

Explanation:

The 'intersection()' method returns a new set containing only the elements that are common to both sets.

Question 7

What is the correct way to get user input and store it in a variable named 'name'?

name = input('Enter your name:')
input('Enter your name:') = name
name = print('Enter your name:')
print('Enter your name:') = name

Explanation:

The input() function in Python takes an optional prompt argument and returns the user's input as a string. The input is then assigned to the variable 'name' using the '=' operator.

Question 8

What is the output of the following Python code snippet?

print(type(5.0))

<class 'int'>
<class 'float'>
<class 'str'>
<class 'number'>

Explanation:

The type() function in Python returns the data type of a given value. In this case, 5.0 is a floating-point number, hence the output is <class 'float'>.

Question 9

Which statement is true about the else block in a while loop?

It always executes after the loop finishes.
It executes only if the loop condition becomes false.
It executes only if the loop contains a break statement.
The else keyword cannot be used with a while loop.

Explanation:

In a while loop, the else block is executed only when the loop's condition evaluates to false, and not when the loop is terminated by a break statement.

Question 10

What will the variable 'x' hold after this code executes?

x = 5
x %= 2

Explanation:

The '%=' operator performs the modulo operation and then assigns the result back to 'x'. The remainder when 5 is divided by 2 is 1.

Question 11

What will the following Python code snippet print?

x = 5
if x > 10:
    print('A')
elif x > 3:
    print('B')
else:
    print('C')

A
B
C
The code will result in an error.

Explanation:

The code checks if x is greater than 10. Since it's not, it moves to the elif condition. As x is greater than 3, 'B' is printed.

Question 12

What is the correct way to print 'Hello, World!' in Python?

print('Hello, World!')
console.log('Hello, World!')
System.out.println('Hello, World!')
echo 'Hello, World!'

Explanation:

Python uses the print() function to display output. The text to be printed is enclosed in parentheses and single or double quotes.

Question 13

Which comparison operator is used to check if two values are not equal?

Explanation:

The '!=' operator checks for inequality between two values. If the values are not equal, it returns True; otherwise, it returns False.

Question 14

What is the output of the following Python code?

string = 'Hello, world!'
print(string[7:12])

world
world!
Hello
ello,

Explanation:

In Python, string slicing uses a zero-based index. string[7:12] extracts characters from index 7 (inclusive) to 12 (exclusive), resulting in the substring 'world'.